Air Entrapment

The air entrapment model in FLOW-3D is used to estimate the amount of entrained air occurring in metal casting systems, such as gravity-poured casting processes. It is based on simple physical mechanisms, which means it can also be used to estimate the amount of entrained air occurring in other metal casting systems, such as high pressure die casting processes. Recent additions of even more physical details in the model allow entrained air, which is assumed to be in the form of bubbles, to be modeled as rising in the surrounding liquid metal because of buoyancy forces and even leaving the liquid if it reaches a free surface.

A support arm cast in A380, colored by air entrainment. Courtesy of Littler Diecast Co.

4 simulation cases of the Caster Wheel Leg part. These parts are made of Zinc alloy #5. Courtesy of Deco Products.

Today's post is about a simulation for a municipal application. I usually draw on work-related inquiries for these blog posts, and this week a municipal design consultancy called asking about how we handle the combined sewer overflow problem (heads up the answer is very well!). Typically there are two important aspects, one is understanding the […]